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Cisco Catalyst 4500 Series Command Reference Guide

Cisco Catalyst 4500 Series
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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
OL-27596 -01
Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
ip cef load-sharing algorithm
ip cef load-sharing algorithm
To configure the load-sharing hash function so that the source TCP/UDP port, the destination TCP/UDP
port, or both ports can be included in the hash in addition to the source and destination IP addresses, use
the ip cef load-sharing algorithm command. To revert back to the default, which does not include the
ports, use the no form of this command.
ip cef load-sharing algorithm {include-ports {source source | destination dest} | original |
tunnel | universal}
no ip cef load-sharing algorithm {include-ports {source source | destination dest} | original |
tunnel | universal}
Syntax Description
Defaults Default load-sharing algorithm is disabled.
Note This option does not include the source or destination port in the load-balancing hash.
Command Modes Global configuration mode
Command History
Usage Guidelines The original algorithm, tunnel algorithm, and universal algorithm are routed through the hardware. For
software-routed packets, the algorithms are handled by the software. The include-ports option does not
apply to the software-switched traffic.
Examples This example shows how to configure the IP CEF load-sharing algorithm that includes Layer 4 ports:
Switch(config)# ip cef load-sharing algorithm include-ports
Switch(config)#
include-ports Specifies the algorithm that includes the Layer 4 ports.
source source Specifies the source port in the load-balancing hash functions.
destination dest Specifies the destination port in the load-balancing hash. Uses the source and
destination in hash functions.
original Specifies the original algorithm; not recommended.
tunnel Specifies the algorithm for use in tunnel-only environments.
universal Specifies the default Cisco IOS load-sharing algorithm.
Release Modification
12.1(12c)EW Support for this command was introduced on the Catalyst 4500 series switch.

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Cisco Catalyst 4500 Series Specifications

General IconGeneral
SeriesCatalyst 4500 Series
CategorySwitch
Layer SupportLayer 2, Layer 3
Form FactorModular chassis
StackableNo
Chassis Slots3, 6, 7, 10
Power Supply OptionsAC, DC
RedundancyPower supply, Supervisor engine
Network ManagementCisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
FeaturesSecurity, QoS
Port DensityUp to 384 ports per chassis
Security Features802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine8-E

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